Improvement in wheels for vehicles



H. menu. I whens for Vehicies.

No 153 842. P atentedAug.4,l 874.

ATTORN EY-$ UNITED STATES PATENT OFFICE.

HENRY NY GUM, OF UN IONTOWN, PENNSYLVANIA.

IMPROVEMENT IN WHEELS FOR VEHICLES.

Specification forming part of Letters Patent No. 153,842, dated August4, 1874 application filed May 16, 1874.

To all whom it may concern vBe it known that I, HENRY NYoUM, ofUniontown, in the county of Fayette and State of Pennsylvania, haveinvented a new and valuable Improvement in Carriage-Hubs; and I dohereby declare that the following is a full, clear, and exactdescription of the construction and operation of the same, referencebeing had to the annexed drawings making a part of this specification,and to the letters and figures of reference marked thereon.

Figure l of the drawing is a representation of a front view of mydevice, showing section of one spoke. Fig. 2 is a sectional view of mydevice, and Figs. 3, 4, 5, '6, and 7 are detail views.

This invention has relation tonovel means for inserting spokes intometallic hubs for vehicles; and it consists in the use of split tenonson the spokes, in combination with wedges and mortises of a peculiarshape, whereby, when the spokes are inserted into the mortises in thehub, and the said wedges are driven into the split tenons, the latterwill be forcibly spread out into the mortises, and prevented fromwithdrawal or casual detachment. At the same time, should any one ormore of the spokes become loose, the same can be readily tightened by afew strokes of a hammer on the wedges of such loose spokes, as will behereinafter explained.

In the annexed drawings, A designates a metal hub, and B the spokes,which are inserted into mortises formed therein. The hub narrowest walla of each mortise is extended out, so as to afford a good bearing forthe spoke, and support it against lateral strain..

The tenons b are split longitudinally, and after they are inserted intothe mortises the split portions are forcibly driven into the concavitiesby means of wedges g, which, in crosssection, are diamond shape.

These wedges may be made of metal, though I prefer to make them of somehard wood.

1 I am aware that split-tenon spokes, and also hub-bands having radialwedge-shaped partitions, as shown in patents dated December 24., 1872,No. 134,152, and January 21, 1873, No. 135,119, are not new.

What I claim as new, and desire to secure by Letters Patent, is-

A metal hub with mortises having concave walls a a, in combination withsplit tenons b and wedges g, substantially as specified.

In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses. HENRY NYGUM.

Witnesses MARSHALL N. LEWIS, FRANK L. BROOKS.

